Everton great Bob Latchford has warned Premier League defences there is even more to come from on-fire striker Romelu Lukaku.

Luaku, 22 is one of the top flight’s form strikers, having notched six goals in nine appearances in all competitions this season for the Toffees.

And on the eve of Sunday's Merseyside derby at home to Liverpool, Latchford, who hit 138 goals in a seven-year Goodison career, believes boss Roberto Martinez can help the Belgian boost his goals tally.

“He has got a lot of talent,” said Latchford. “He has the potential to produce even more though.

“He’s great going forward and he knows where the back of the net is.

Luk-ing good: Latchford believes Roberto Martinez will get the best out of Lukaku (Image: AFP/Getty)

“But Martinez can get even more out of him. He is at an age now, 22, when he has to start producing goals for the next few years. If he doesn’t his value as a player will drop.”

“They are having a similar problem winning things at the moment,” he said. “But I think Martinez could end that. He’s a winner – he won the FA Cup with Wigan.

“When I was at the club we had a great team but we just kept missing out on trophies. I suppose you could call us the nearly men. It was a great time in my life and my career, though, and I had a great relationship with the Everton fans.

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“My favourite moment was when we thrashed Cheslea 6-0 and I scored my 30th goal of the season. I was trying to win a national newspaper prize to become the first player to score 30 league goals in a campaign for seven years.

“It was just a shame we missed out on silverware.”

‘Bob Latchford: A Different Road’ has just been published by deCoubertin.